Created
June 9, 2022 07:48
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Get properties, ordered by the distance from an existing property. Latitude and longitude are stored in the address relationship.
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<?php | |
// Property::query()->nearest($property)->limit(5)->get(); | |
// $property->nearest()->limit(5)->get(); | |
public function scopeNearest(Builder $query, ?Property $property = null): Builder | |
{ | |
$property = $property ?? $this; | |
$earthRadius = 3959; | |
$latitude = $property->address->lat; | |
$longitude = $property->address->lng; | |
$distanceColumn = 'distance'; | |
$addressTable = $property->address->getTable(); | |
$addressKeyColumn = $property->address->getQualifiedKeyName(); | |
$addressRelationColumn = $property->qualifyColumn('address_id'); | |
$latitudeColumn = $property->address->qualifyColumn('lat'); | |
$longitudeColumn = $property->address->qualifyColumn('lng'); | |
$selects = [ | |
$property->qualifyColumn('*'), | |
"( | |
{$earthRadius} * Acos( | |
Cos(Radians({$latitude})) * | |
Cos(Radians({$latitudeColumn})) * | |
Cos(Radians({$longitudeColumn}) - | |
Radians({$longitude})) + | |
Sin(Radians({$latitude})) * | |
Sin(Radians({$latitudeColumn})) | |
) | |
) AS `{$distanceColumn}`", | |
]; | |
return $query | |
->selectRaw(implode(', ', $selects)) | |
->whereNot($property->getQualifiedKeyName(), $property->getKey()) | |
->join($addressTable, $addressKeyColumn, '=', $addressRelationColumn) | |
->orderby($distanceColumn); | |
} |
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